Getting to the city centre

• Arrival by plane: Once you arrive, it is recommended to take one of the licensed taxi companies (most popular are MPT, Ele Taxi, Super Taxi). You’ll find the taxis in front of the exit from the terminal. Trip to the city centre by taxi costs about 10 EUR (30-40 PLN). If you prefer to go by bus, take number 175 which leaves from in front of the terminal. You can buy the tickets from a kiosk inside the airport or from the driver (a small extra fee applies then). The journey to the city centre takes approximately 30 minutes (or longer in the rush hour) and costs about 1 EUR or 3,60 PLN (single fare, normal ticket).
Visit Warsaw airport website 

• Arrival by train: Please get off at the Main Railway Station of Warsaw which is called Warszawa Centralna. When you go out from the train follow the signs “Marriott Hotel” and you’ll find a taxi stop. It is recommended to take one of the licensed taxi companies (most popular are MPT, Ele Taxi, Super Taxi). 
Warsaw also offers public communication: trams, buses and subway. If you plan to use public transport during your stay, consider buying a one-day travelcard, which allows you unlimited use of all means of public transport within city limits for 24 hours (3 EUR or 12 PLN).
Visit Public Transport website 

Warsaw - Helsinki flight schedule for 10 August 2012